تجزیه و تحلیل حساسیت شارژ از تخلیه های متعدد در یک سیستم سه هادی با شکاف کوچک

The concept of charge sensitivity factors is introduced for analysis of electrostatic discharge (ESD) events. The methodology is used to study the conditions for multiple discharges for an in-line three cylinder geometry with small gaps. The method can be applied to any structure with multiple fixed gaps where charge results from motion with respect to a reference structure.

Most electrostatic discharge (ESD) events are modelled as the approach of a charged floating body (the source) to another body (the sink) which can be either floating or grounded. In the human body model (HBM), the source is the charged human body; in the charged device model (CDM), the source is the charged integrated circuit. Triboelectrification and induction charging are the prime charge generation methods. During the final approach of the source to the sink, the charge on the source body is usually assumed to be constant; the change in body potentials and the probability of a discharge event are due to changes in the capacitances of the bodies in the given geometry. Recently, this analysis was extended to include a three body problem with small gaps [1]; a system of bodies with fixed charge and changing separation was studied to determine conditions for primary and secondary discharges [2] and [3]. A review of the literature showed an increase in interest to study low-voltage discharges, including multiple discharges, in small gap geometries [4], [5], [6], [7], [8], [9], [10], [11], [12], [13], [14], [15] and [16]. In this work, the analysis is extended to include a fixed geometry of conductors with body charge being the variable. In application, this may occur in a geometry in which gaps between a number of stationary conductors is fixed; charging of the system conductors could occur due to linear or rotational motion with respect to another reference body; possible charging mechanisms include triboelectrification and induction charging.